75results about How to "Prevent rolling" patented technology

This invention relates to the field of building construction technology and provides a height-adjustable indoor construction platform, including a main board. A lifting mechanism and a construction platform are arranged above the main board. Extended platforms are hinged to both sides of the construction platform. The beneficial effects of this invention are as follows: long pipes are fixed by the limiting mechanism, which can prevent the pipes from rolling or shifting during upward transportation without the need for worker assistance. In addition, the lifting mechanism realizes automated upward transportation of pipes, thereby reducing the labor intensity of workers and speeding up the construction progress. By using the cooperation of the flipping mechanism and the limiting mechanism, while fixing the pipes, the extended platform also forms a guardrail to protect workers, thereby improving safety. Furthermore, the extended platform is not limited to carrying pipes; it can also be used to place other materials or items as an extension platform of the construction platform, increasing the workers' working space.

The utility model discloses a SiC wafer degumming protection device, which comprises a first fixer, the first fixer comprises a first fixing plate, and the axial direction of a wafer group is along a first direction; the surface, facing the wafer group, of the first fixing plate is matched with the semi-circumferential surface of the wafer group; and in the second direction, the first fixers are divided into two groups which are oppositely arranged, and the first fixing plates in the two groups of first fixers can be far away from each other or close to each other in the second direction. When the two first fixing plates are far away from each other, a sufficient space is formed between the two first fixing plates to accommodate the wafer group. When the two first fixing plates are close to each other, the surfaces, facing the wafer group, of the two first fixing plates can be matched with the two semi-circumferential surfaces of the wafer group respectively, so that the two first fixing plates can support wafers in the wafer group in the second direction, and the wafers are prevented from rolling in the second direction; therefore, the wafer can be prevented from rolling and being damaged in the degumming and wafer washing process, and the wafer quality is further improved.

The utility model discloses a circuit board production turnover device, including support frame body and setting in support frame body lower extreme four angle place's universal trundle, be provided with a plurality of layers for placing PCB's placing frame on the support frame body, the placing frame includes first carrier plate and second carrier plate, in first carrier plate and second carrier plate all one to many corresponding recess has a plurality of V type groove for positioning PCB, its characterized in that: first carrier plate fixed connection is in the support frame body, second carrier plate is located first carrier plate top and is relative to first carrier plate and is set to be inclined angle A, in second carrier plate four angle place all respectively rotate to set up the sliding block, the support frame body is correspondingly provided with movable slot respectively to the sliding block, the sliding block one to many corresponding activities setting in movable slot, second carrier plate can follow the sliding block along movable slot activity, to make the inclined angle A less than or equal to 90 degrees, be equipped with the locking member of locking the sliding block displacement on the support frame body.

The application discloses a heat exchange pipe threading device and relates to the technical field of heat exchange pipe threading equipment. The heat exchange pipe threading device comprises a feeding mechanism, a baffle fixing mechanism and an end plate fixing mechanism. The feeding mechanism comprises a frame body, a driving assembly and a conveying assembly, and the conveying assembly comprises a clamping part and a plurality of supporting parts. The baffle fixing mechanism comprises a moving frame, a first supporting frame and a second supporting frame, and the second supporting frame is provided with a supporting part and a plurality of pressing parts. The end plate fixing mechanism comprises a fixing frame, a baffle and a plurality of supporting blocks, and the supporting blocks are connected with the fixing frame through first lead screws. The feeding mechanism can be used for flexibly adjusting the position and height of the heat exchange pipe, assisting workers in pipe threading operation, effectively improving pipe threading efficiency, and adapting to different types of components through the baffle fixing mechanism and the end plate fixing structure, so that the components can be clamped and workers can conveniently perform pipe threading operation.

The utility model discloses a scratchproof steel roll hoisting sling and buffer protection device belongs to metallurgical product hoisting equipment technical field, scratchproof steel roll hoisting sling and buffer protection device, including main rod and ring, the ring is screwed on the top of main rod, the below of main rod is connected with riser, the below of riser is connected with the connecting seat of bolt, and the left lower corner and right lower corner position of riser are installed with conical seat respectively, through setting up by the flexible clamping structure of arc seat and arc clamp cover, realized to the full package formula, non -injury clamping of steel roll outer circumferential surface, in the hoisting process, two arc seats are driven under the four connecting rod mechanism and move inwards synchronously, and the arc clamp cover of its inside is made of flexible material (rubber), can completely adhere to the outer circumferential surface of steel roll, and this clamping mode avoids the mode of traditional sling insertion steel roll inner diameter or with metal hook, thoroughly eliminates the direct contact of metal parts and steel roll surface.

The utility model relates to tank transportation technical field, concretely is a kind of shock-absorbing fixing device of liquid ammonia transport vehicle. It includes shock absorber and two groups of clamping components. Two groups of clamping components all include first semicircle ring and second semicircle ring, and U-shaped frame is connected on first semicircle ring and second semicircle ring;Shock absorber includes longitudinal buffer assembly and transverse buffer assembly, wherein, longitudinal buffer assembly includes fixed base, the buffer seat being arranged on the top of fixed base and the multiple first hydraulic shock absorber being installed between fixed base and buffer seat;Transverse buffer assembly is provided with two groups, and two groups of transverse buffer assembly are respectively installed at the both ends of buffer seat. The utility model has the characteristics of good shock-absorbing effect and high stability.

The utility model discloses an obstetrical nursing enclosure, including fender assembly for limiting infant sleep position, including fender main part, fender main part is right triangle prism structure, and the inclined surface of fender main part is provided with the blocking part, and the sidewall of fender main part is inlayed and is provided with the enclosure mounting hole. The utility model's enclosure assembly passes through the design of the up and down movement of screw column in sliding mouth, can fast regulation height, and the enclosure of lowering in daytime is convenient for nursing personnel to arrange bed, feed or check infant, and the enclosure of lifting in night ensures safety. Compared with traditional fixed height enclosure, the device can realize function switching without disassembling, and the operation is simple and direct, and knob control does not need additional tool, and is suitable for hospital, confinement center and other high frequency nursing scene. The limiting function of fender assembly further reduces the hindrance in the nursing process, ensures infant in the safety area, significantly improves the nursing efficiency, reduces the operation burden of medical staff or parent, and satisfies the diversified nursing demand.

The present application relates to cable equipment technical field, especially a kind of protection device for cable winding with convenient transportation, including, bearing assembly, including two support frames symmetrically arranged, the placing groove being opened in the end surface of support frame and the hook groove being opened in the other end surface of support frame;And, winding assembly, including shaft body, symmetrically arranged in the both ends of shaft body and can be detachably connected with the placing groove of the installation disc, the end surface of installation disc is also provided with the hook that can be matched with the hook groove;The present application can be easily adjusted to the distance of two groups of support frames, so that the protection device can be adapted to use with a variety of sizes of cable drum, ensure that the both ends of protection device are stably supported to the both ends of cable drum, and the both ends of cable drum are protected and supported by protection device, so that the surface of both ends of cable drum is damaged and the cable drum is rolled on the ground, to prevent accidents from happening.

A dehumidifier, which comprises a casing, a refrigeration system, a water tank and a water tank; the casing is provided with a containing space, the top surface of the casing is provided with a receiving cavity extending downward, the receiving cavity is arranged above the containing space; the refrigeration system is arranged in the containing space, the refrigeration system comprises a compressor, a condenser and an evaporator; the water tank is arranged in the receiving cavity from top to bottom; the roller is detachably arranged at the bottom of the casing; the side wall of the receiving cavity is provided with a receiving groove; the roller can be removed from the bottom of the casing and placed in the receiving groove; when the water tank is placed in the receiving cavity, the water tank can block the receiving groove. The water tank is arranged in the receiving cavity of the casing from top to bottom, which can solve the problem that the user needs to squat to lift the water tank in the related dehumidifier. By arranging the receiving groove on the side wall of the receiving cavity, cooperating with the roller which can be removed from the bottom of the casing and placed in the receiving groove, and then it is convenient for the user to install the roller according to the needs.

This invention discloses a modular quick-installation cable reel, relating to the field of cable reel technology. It includes a cylindrical body and end plates located on both sides of the cylindrical body, and two clamping claws. Several square slots are evenly distributed along the circumference of the cylindrical body on the end plates. The clamping claws are C-shaped and engage with the square slots, with their openings facing the other end plate. A base is rotatably mounted on the clamping claws, and a clamping rod is mounted on the base, penetrating the base and movably engaging with it. This modular quick-installation cable reel provides a pair of clamping rods, each of which can be installed at multiple positions circumferentially on the end plates via the clamping claws. Thus, after the cable is completely wound onto the cylindrical body, the operator can engage the clamping claws with the corresponding square slots according to the position of the cable end, and then clamp the cable end with the two clamping rods. Compared to the prior art using adhesive tape, this significantly reduces the possibility of cable loosening.

The utility model relates to the technical field of indoor building construction, and discloses a lift for indoor building construction, which comprises a base and a support table, a plurality of first servo motors are arranged in the middle of the outer side of the upper end of the base, and the output ends of the first servo motors extend into the base and are fixedly connected with first threaded rods; first threaded cylinders are arranged at the upper ends of the exteriors of the multiple first threaded rods in a threaded mode, supporting plates are fixedly connected to one sides of the multiple first threaded cylinders, a second servo motor is arranged on one side of the end face of one side of the supporting table, and the output end of the second servo motor extends into the supporting table and is fixedly connected with a transmission shaft; the two sides of the outer portion of the transmission shaft are sleeved with gears. According to the lifting machine, the gear is driven by the second servo motor to drive the rack to move, so that the connecting net slides out, tools are prevented from falling off to hurt ground personnel, meanwhile, work interruption caused by falling of the tools is reduced, and safety and working efficiency are improved.

The utility model relates to the technical field of log cutting equipment, and discloses a multi-piece horizontal cutting machine for logs, which comprises a machine body, a log conveying mechanism is arranged on the machine body, two pressing wheel components are arranged above the log conveying mechanism, a cutting component is arranged between the two pressing wheel components, and the cutting component is arranged on the machine body. The cutting assembly comprises an upper cutting knife roll assembly and a lower cutting knife roll assembly, the upper cutting knife roll assembly and the lower cutting knife roll assembly are the same in structure and each comprise a cutting knife shaft and a plurality of cutting blades arranged on the cutting knife shaft at equal intervals, the cutting knife shafts are sleeved with the cutting blades, and the cutting blades are arranged on the cutting knife shafts. The cutting cutter shaft is provided with a cutting cutter distance adjusting mechanism used for automatically adjusting the distance between the cutting blades. The cutting device has the advantages that the distance between the cutting knives can be automatically adjusted, the cutting knives do not need to be detached during adjustment, efficiency is high, and safety is good.

This invention provides a protective structure for excavation of foundation pits above tunnels, including a foundation pit road, a foundation pit slope, and a protective structure body. The protective structure body includes protective components, a shielding structure, and a fall arrestor structure. The protective components cover the surface of the foundation pit slope, and the edges of the protective components are provided with frames. The sides of the frames of each protective component are fitted and aligned with each other. Fixing members are inserted at the corners of the frames. The protective components are connected to the buffer structure through the fixing members. This protective structure uses fixing members to fix both the protective components and the buffer structure to the foundation pit slope, thereby simplifying the installation and construction steps and improving connection stability. The buffer structure can reduce the impact force generated by a small number of rolling stones, and the shielding structure blocks them from rolling onto the foundation pit road. The stones can also be discharged downward along the diversion channel with rainwater, thus protecting the foundation pit road.

The utility model relates to the technical field of stainless steel strip storage, in particular to an anti-rolling device for stainless steel strip storage. According to the technical scheme, the steel belt winding device comprises a winding drum, a long plate, a second screw, a rotating rod, a first bolt and a second bolt, the two sides of the lower surface of the long plate are movably connected with movable plates correspondingly, semicircular discs are fixed to the lower surfaces of the movable plates, connecting plates are fixed to the front ends and the rear ends of the semicircular discs correspondingly, bottom plates are fixed to the lower surfaces of the connecting plates, and a steel belt body is wound on the winding drum. And the winding drum is connected with the semicircular disc in a sleeving manner. The stainless steel strip storage device has the advantages that the winding drums with different lengths can be conveniently limited, and meanwhile, the stored stainless steel strips can be prevented from rolling.

This utility model relates to the field of material conveying technology, specifically providing a multifunctional circulating feeding and conveying system, including a frame, a conveying mechanism, a conveying platform, a lifting and weighing device, and a material size detection device. The conveying mechanism is mounted on the frame and is used to convey materials. Multiple sets of conveying platforms are arranged at intervals on the conveying mechanism. The lifting and weighing device is mounted on the frame and is used to weigh the materials. The material size detection device is mounted on the frame and is used to measure the dimensions of the materials. The circulating feeding and conveying system provided by this utility model can achieve automatic material feeding, reducing labor costs and workload. By setting up the lifting and weighing device and the material size detection device, online weighing and material size detection can be achieved, eliminating the need for separate offline weighing and size detection devices, reducing the number of material handling operations, and improving production efficiency.

This utility model discloses a rod cap locking device, belonging to the field of fishing tackle. The rod cap locking device includes: a cap sleeve, fitted onto a fishing rod, having a slot for inserting the fishing rod; the rod cap locking device further includes: a first line take-up block, disposed on the cap sleeve and located on the side wall of the cap sleeve; a second line take-up block, disposed on the cap sleeve and located on one side of the first line take-up block; wherein, a deformation groove is formed on the cap sleeve; the deformation groove extends along the height direction of the cap sleeve and penetrates at least downwards through the cap sleeve; the deformation groove is located between the first line take-up block and the second line take-up block; the deformation groove communicates with the slot. The beneficial effect of this application is that it provides a rod cap locking device that can adapt to fishing rods of different diameters, whether small or large.

The utility model relates to the field of cable wheel discs, in particular to a cable wheel disc which comprises a center cylinder, two oppositely-arranged baffle discs and an adjusting device, the center cylinder is composed of two telescopic cylinders which are matched in an inserted mode and connected in a sliding mode, and the adjusting device achieves the telescopic function of the center cylinder through threaded connection of a lead screw and the telescopic cylinders. In addition, the cable wheel disc is further provided with a sliding rail and sliding groove matching structure to enhance stability, the detachable multi-pulley design is arranged on the edge of the blocking disc to facilitate adjustment, and meanwhile an anti-rolling device is arranged to ensure use safety. The technical effects of improving the adaptability and safety of the cable wheel disc and optimizing the operation convenience are achieved.

The utility model is applicable to the technical field of agricultural machinery, and provides a biological organic fertilizer raw material pulverizer which comprises a feeding conveying belt, the feeding conveying belt comprises a rack and a conveying belt, two rotatable limiting cylinders are arranged on the rack in a bilateral symmetry mode, and a mounting frame is arranged at the rear end of the feeding conveying belt. Guide plates are fixedly connected to the two sides of the inner wall of the mounting frame, a cutting assembly used for cutting materials and a driving assembly used for driving the cutting assembly to move up and down are arranged on the mounting frame and located above the guide plates, a crushing bin is arranged on the rear sides of the guide plates, and two staggered crushing knife rollers are arranged in an inner cavity of the crushing bin. According to the biological organic fertilizer raw material pulverizer, by arranging the cutting assembly, materials are cut and cut into small sections before being fed into the pulverizing bin, the subsequent pulverizing procedure is facilitated, the limiting barrel is arranged on the conveying belt rack, the materials are limited and prevented from rolling towards the two sides, meanwhile, the materials are fed into the cutting assembly in the middle, and therefore the materials are conveniently pulverized. And convenience is provided for material cutting.

The invention discloses a control method and a control system for an agv transport vehicle for thermal insulation pipe machining. The control system comprises a load state sensing module, a gravity center dynamic evaluation module, a path dynamics modeling module, a self-adaptive motion planning module and an execution control module. By integrating a high-precision weighing sensor array, a multi-point displacement detection unit and a clamping jaw pressure sensing array, the full-dimension real-time sensing of the load state of the polyethylene outer sleeve is realized, and the limitation that the prior art only depends on single overload alarm is overcome; a gravity center dynamic evaluation model constructed based on measured data can accurately quantify the mass center offset degree, and a reliable physical basis is provided for subsequent motion planning; according to the provided self-adaptive motion planning mechanism, load dynamic characteristics and path geometric constraints are deeply fused, and pipe body slippage or rolling caused by inertia moment superposition is fundamentally avoided.

This utility model discloses a concrete mixing device for bridge and road construction, including a frame, a mixing drum, and moving wheels. Each moving wheel on the frame has a positioning structure, which includes a bracket with a screw cylinder vertically threaded into it. The bottom end of the screw cylinder is rotatably connected to a positioning block. A double-ended screw is rotatably mounted on the side wall of the bracket corresponding to the circumference of the moving wheel. A pair of clamping plates are symmetrically screwed onto the two threaded sections of the double-ended screw to clamp the end face of the moving wheel. This utility model sets four sets of positioning structures corresponding to four moving wheels. By turning the screw cylinder, the positioning block is driven to contact the ground, increasing the friction with the ground. When the double-ended screw is turned, the clamping plates can be driven to clamp the side of the moving wheel to prevent it from rolling. Turning the screw can also drive the positioning rod into the soil for better locking and positioning, effectively increasing the stability of the entire equipment in complex working conditions such as bridge and road construction.

The utility model discloses a stackable material suspension type transport case in the technical field of material transfer, which comprises a side support plate and a bottom plate, the side support plate is formed by four square tubes, the four square tubes are respectively and vertically mounted at four vertexes of the bottom plate, and a rectangular space for placing materials is defined by the four square tubes; two first side plates which are oppositely arranged are mounted between every two adjacent square pipes, and U-shaped grooves for placing materials are formed in the first side plates; the material box further comprises four supporting legs, each supporting leg is composed of a first connecting part and a second connecting part, the first connecting parts and the second connecting parts are rotationally connected through fixing hinges and fixed through bolts, and the square pipes are connected with the first connecting parts in a clamped mode and can be bent in the direction away from the material containing space through the fixing hinges. The product can leave the side plate and automatically slide to the bottom plate; the material box is stable in structure, convenient to stack, reliable in material supporting, convenient to transport and store, and suitable for stacking and transferring scenes of various materials, and the supporting legs can be folded.

The utility model relates to a finished product supporting device for welding and blanking of a steel tube tower, which comprises a plurality of supporting units, an interval is formed between every two adjacent supporting units, the supporting units are connected together through a connecting unit, and each supporting unit comprises a side supporting leg, a cross beam, a top plate and a bearing piece, the two ends of the cross beam are respectively provided with one side supporting leg, the two side supporting legs are symmetrically arranged along the cross beam, a top plate is arranged on the tops of the two side supporting legs, the top plate is parallel to the cross beam, and the bearing piece is arranged on the upper portion of the top plate. The device has the advantages that the side supporting legs are symmetrically mounted at two ends of the cross beam, the top plate and the bearing part are arranged at the top to form a stable supporting structure, weight of finished products is effectively dispersed, and placement stability is enhanced.

The invention discloses a feeding machine for cotton spinning cloth production, which comprises a base, side plates symmetrically and vertically fixed on two sides of the base and a lifting mechanism arranged between the two side plates, a bearing plate is mounted on the lifting mechanism, a limiting adjusting assembly is arranged on the bearing plate, and a cloth pulling mechanism is arranged on the side plate on one side of the bearing plate; the cloth raking mechanism comprises a side support fixed to the side plate, a second motor is horizontally installed on the side support, the output end of the second motor is connected with a driving gear, a fixing plate is fixed to the outer side wall of the side plate, and a connecting plate is installed on the fixing plate through a connecting shaft. A driven gear meshed with the driving gear is fixed to the outer end of the connecting shaft, and a plurality of connecting transverse rods are arranged on the connecting plate at equal intervals. The invention belongs to the technical field of cloth production feeding, and particularly relates to a feeding machine for cotton spinning cloth production, which can reduce the manual labor intensity, improve the production efficiency and ensure the stability of a cloth roll in the lifting process.

The utility model discloses a kind of cable protection pipe with auxiliary support structure, it is related to cable protection pipe technical field, the utility model includes pipeline main body, and the bracket is connected with the buffer sleeve in pipeline main body top, and buffer sleeve outside is provided with adhesive layer, and the support strip is connected in the bracket bottom.The utility model is fixed in advance by the setting of bracket in the process of cable protection pipe production, and bracket is used as support structure, so in subsequent transportation and placing process, the flatness of bracket bottom makes that pipeline main body is not prone to rolling phenomenon, even if rolling also cannot roll very far, stability is better compared with traditional cylindrical cable protection pipe;And when subsequent installation, compared with traditional first through bolt pipeline main body and support structure assembly, then through expansion bolt etc. Fastening structure is fixed to ground or wall;Conveniently support pipeline main body, avoid rolling, and improve installation efficiency to some extent.

The application discloses a keel strip steel fixing device, which comprises a support frame, a fixed partition plate and a movable partition plate; the support frame is horizontally placed on the ground and can place at least one roll of steel strip; the steel strip is vertically placed on the support frame, and the support frame can limit the rolling of the steel strip; the fixed partition plate is vertically arranged at one end or both ends of the support frame and plays a supporting role on the steel strip placed at the end of the support frame; the movable partition plate is provided with a plurality of insertion slots at equal intervals on the support frame, and the movable partition plate can be vertically inserted into the insertion slots to limit the steel strip between the fixed partition plate and the movable partition plate from toppling along the axis direction of the support frame. The support frame at the bottom prevents the rolling of the strip steel, and the fixed partition plate and the movable partition plate arranged on the support frame prevent the strip steel from toppling, so that the effective fixing of the strip steel is realized, the collapse of the strip steel is avoided, the safety hidden danger is eliminated, and the neatness of the on-site environment is ensured.

The utility model discloses a kind of anti-slip devices of mine car, it is related to mine transport safety technical field, including transport shovel car body structure, clamping structure and anti-slip structure, the clamping structure is arranged at the bottom end of transport shovel car body structure, the anti-slip structure is arranged above clamping structure, the clamping structure is used to the fixed effect to anti-slip structure, the anti-slip structure is used to prevent the situation that transport shovel car body structure occurs slip slope. The utility model can avoid the situation that transport shovel car body structure occurs slip car by resisting strip, prevent slip car can effectively avoid hitting surrounding operating personnel, guarantee personnel life safety. Preventing slip car can also avoid unnecessary property loss caused by hitting accessory equipment. Moreover, preventing slip car can also reduce the burden of component, prolong the service life of equipment, to reduce maintenance cost.

This utility model discloses a support device for placing a conduit, belonging to the field of launch vehicle assembly technology. It includes a sliding base, a height adjustment component, and a conduit support. Two supporting inclined surfaces restrict the conduit's rolling, and through-holes allow cable ties to be threaded through them to secure the conduit to the support, preventing rolling or displacement during transport or placement, thus ensuring stability and safety. Casters enable flexible movement and rapid positioning between workshops. The height adjustment component has an adjustable length of 15cm, flexibly adapting to operators of different heights, ensuring comfortable loading, unloading, or insulation treatment of the conduit.

The utility model discloses poria cocos primary processing slicing conveying equipment which comprises a bottom frame, a frame body and a slicing mechanism, the frame body is connected to the top end of the bottom frame, the slicing mechanism is arranged in the frame body, the poria cocos primary processing slicing conveying equipment further comprises a conveyor, a containing table, a first hydraulic cylinder and two clamping blocks, the first hydraulic cylinder is arranged on the bottom wall of the bottom frame, and the two clamping blocks are arranged on the bottom wall of the bottom frame. The telescopic rod is vertically upward, and the placing table is arranged at the top end of the first hydraulic cylinder. The conveyor is arranged to convey poria cocos one by one, the containing assembly is used for driving the rotating plate to rotate, the discharging groove is opened, the poria cocos is placed in the discharging groove and prevented from rolling, and then the first hydraulic cylinder is started to push the containing table to ascend and be located in the containing groove; according to the poria cocos slicing device, the poria cocos is taken out, then the driving assembly is used for driving the two clamping blocks to clamp and fix the poria cocos, the slicing mechanism is used for slicing, and then the pushing assembly is used for pushing away the poria cocos, so that the poria cocos slicing efficiency is improved, and the labor cost is reduced.

This invention discloses an adjustable sliding pipe support, comprising a concrete support, multiple embedded parts, an arc-shaped support plate, an arc-shaped sliding plate, and multiple sets of clamping mechanisms. The embedded parts are respectively embedded in the concrete support; the arc-shaped support plate is supported by all the embedded parts; the arc-shaped sliding plate is placed on and slidably mounted on the arc-shaped support plate, which has multiple first limiting parts; the multiple sets of clamping mechanisms are arranged along the axial direction of the arc-shaped sliding plate; each clamping mechanism includes a fixed seat, a first adjusting screw, a universal joint mounting seat, a universal joint, and a clamping plate, the clamping plate having an arc-shaped surface for contacting the pipe to be supported. This invention solves the problem of pipe rolling, ensuring the stability of pipes of various sizes during long-term operation, reducing stress changes caused by rolling, and extending the service life of the pipe.